import { h, ref, Ref, computed, reactive, inject, nextTick } from 'vue'
import { defineVxeComponent } from '../../../ui/src/comp'
import { VxeUI } from '../../../ui'
import XEUtils from 'xe-utils'
import { formatText } from '../../../ui/src/utils'
import { errLog } from '../../../ui/src/log'

import type { VxeTablePrivateMethods, VxeTableConstructor, VxeTableMethods } from '../../../../types'

const { getI18n, getIcon, renderEmptyElement } = VxeUI

export default defineVxeComponent({
  name: 'VxeTableExportPanel',
  props: {
    defaultOptions: Object as any,
    storeData: Object as any
  },
  setup (props) {
    const VxeUIModalComponent = VxeUI.getComponent('VxeModal')
    const VxeUIButtonComponent = VxeUI.getComponent('VxeButton')
    const VxeUISelectComponent = VxeUI.getComponent('VxeSelect')
    const VxeUIInputComponent = VxeUI.getComponent('VxeInput')
    const VxeUICheckboxComponent = VxeUI.getComponent('VxeCheckbox')

    const $xeTable = inject('$xeTable', {} as VxeTableConstructor & VxeTableMethods & VxeTablePrivateMethods)
    const { computeExportOpts, computePrintOpts } = $xeTable.getComputeMaps()

    const reactData = reactive({
      isAll: false,
      isIndeterminate: false,
      loading: false
    })

    const xButtonConfirm = ref() as Ref<HTMLButtonElement>
    const xInputFilename = ref() as Ref<HTMLInputElement>
    const xInputSheetname = ref() as Ref<HTMLInputElement>

    const computeCheckedAll = computed(() => {
      const { storeData } = props
      return storeData.columns.every((column: any) => column.checked)
    })

    const computeShowSheet = computed(() => {
      const { defaultOptions } = props
      return ['html', 'xml', 'xlsx', 'pdf'].indexOf(defaultOptions.type) > -1
    })

    const computeSupportMerge = computed(() => {
      const { storeData, defaultOptions } = props
      return !defaultOptions.original && defaultOptions.mode === 'current' && (storeData.isPrint || ['html', 'xlsx'].indexOf(defaultOptions.type) > -1)
    })

    // const computeSupportGroup = computed(() => {
    //   const { defaultOptions } = props
    //   return ['html', 'xlsx', 'csv', 'txt'].indexOf(defaultOptions.type) > -1
    // })

    const computeSupportStyle = computed(() => {
      const { defaultOptions } = props
      return !defaultOptions.original && ['xlsx'].indexOf(defaultOptions.type) > -1
    })

    const handleOptionCheck = (column: any) => {
      const { storeData } = props
      const matchObj = XEUtils.findTree(storeData.columns as any[], item => item === column)
      if (matchObj && matchObj.parent) {
        const { parent } = matchObj
        if (parent.children && parent.children.length) {
          parent.checked = parent.children.every((column: any) => column.checked)
          parent.halfChecked = !parent.checked && parent.children.some((column: any) => column.checked || column.halfChecked)
          handleOptionCheck(parent)
        }
      }
    }

    const checkStatus = () => {
      const { storeData } = props
      const columns = storeData.columns
      reactData.isAll = columns.every((column: any) => column.disabled || column.checked)
      reactData.isIndeterminate = !reactData.isAll && columns.some((column: any) => !column.disabled && (column.checked || column.halfChecked))
    }

    const changeOption = (column: any) => {
      const isChecked = !column.checked
      XEUtils.eachTree([column], (item) => {
        item.checked = isChecked
        item.halfChecked = false
      })
      handleOptionCheck(column)
      checkStatus()
    }

    const allColumnEvent = () => {
      const { storeData } = props
      const isAll = !reactData.isAll
      XEUtils.eachTree(storeData.columns, (column: any) => {
        if (!column.disabled) {
          column.checked = isAll
          column.halfChecked = false
        }
      })
      reactData.isAll = isAll
      checkStatus()
    }

    const showEvent = () => {
      nextTick(() => {
        const filenameInp = xInputFilename.value
        const sheetnameInp = xInputSheetname.value
        const confirmBtn = xButtonConfirm.value
        const targetElem = filenameInp || sheetnameInp || confirmBtn
        if (targetElem) {
          targetElem.focus()
        }
      })
      checkStatus()
    }

    const getExportOption = () => {
      const { storeData, defaultOptions } = props
      const { hasMerge, columns } = storeData
      const checkedAll = computeCheckedAll.value
      const supportMerge = computeSupportMerge.value
      const expColumns = XEUtils.searchTree(columns, (column: any) => column.checked, { children: 'children', mapChildren: 'childNodes', original: true })
      return Object.assign({}, defaultOptions, {
        columns: expColumns,
        isMerge: hasMerge && supportMerge && checkedAll ? defaultOptions.isMerge : false
      })
    }

    const printEvent = () => {
      const { storeData } = props
      const printOpts = computePrintOpts.value
      storeData.visible = false
      $xeTable.print(Object.assign({}, printOpts, getExportOption()))
    }

    const exportEvent = () => {
      const { storeData } = props
      const exportOpts = computeExportOpts.value
      reactData.loading = true
      $xeTable.exportData(Object.assign({}, exportOpts, getExportOption())).then(() => {
        reactData.loading = false
        storeData.visible = false
      }).catch(() => {
        reactData.loading = false
      })
    }

    const cancelEvent = () => {
      const { storeData } = props
      storeData.visible = false
    }

    const confirmEvent = () => {
      const { storeData } = props
      if (storeData.isPrint) {
        printEvent()
      } else {
        exportEvent()
      }
    }

    const renderVN = () => {
      const $xeGrid = $xeTable.xeGrid
      const $xeGantt = $xeTable.xeGantt

      const { defaultOptions, storeData } = props
      const { isAll: isAllChecked, isIndeterminate: isAllIndeterminate } = reactData
      const { hasTree, hasMerge, isPrint, hasColgroup, columns } = storeData
      const { isHeader } = defaultOptions
      const cols: any[] = []
      const checkedAll = computeCheckedAll.value
      const showSheet = computeShowSheet.value
      const supportMerge = computeSupportMerge.value
      const supportStyle = computeSupportStyle.value
      // const supportGroup = computeSupportGroup.value
      const slots = defaultOptions.slots || {}
      const topSlot = slots.top
      const bottomSlot = slots.bottom
      const defaultSlot = slots.default
      const footerSlot = slots.footer
      const parameterSlot = slots.parameter
      XEUtils.eachTree(columns, (column: any) => {
        const colTitle = formatText(column.getTitle(), 1)
        const isColGroup = column.children && column.children.length
        const isChecked = column.checked
        const indeterminate = column.halfChecked
        const isHtml = column.type === 'html'
        cols.push(
          h('li', {
            key: column.id,
            class: ['vxe-table-export--panel-column-option', `level--${column.level}`, {
              'is--group': isColGroup,
              'is--checked': isChecked,
              'is--indeterminate': indeterminate,
              'is--disabled': column.disabled
            }],
            title: isHtml ? '' : colTitle,
            onClick: () => {
              if (!column.disabled) {
                changeOption(column)
              }
            }
          }, [
            h('span', {
              class: ['vxe-checkbox--icon', indeterminate ? getIcon().TABLE_CHECKBOX_INDETERMINATE : (isChecked ? getIcon().TABLE_CHECKBOX_CHECKED : getIcon().TABLE_CHECKBOX_UNCHECKED)]
            }),
            isHtml
              ? h('span', {
                key: '1',
                class: 'vxe-checkbox--label',
                innerHTML: colTitle
              })
              : h('span', {
                key: '0',
                class: 'vxe-checkbox--label'
              }, colTitle)
          ])
        )
      })

      return VxeUIModalComponent
        ? h(VxeUIModalComponent, {
          id: 'VXE_EXPORT_MODAL',
          modelValue: storeData.visible,
          title: getI18n(isPrint ? 'vxe.export.printTitle' : 'vxe.export.expTitle'),
          className: 'vxe-table-export-popup-wrapper',
          width: 660,
          minWidth: 500,
          minHeight: 400,
          mask: true,
          lockView: true,
          showFooter: true,
          escClosable: true,
          maskClosable: true,
          showMaximize: true,
          resize: true,
          loading: reactData.loading,
          'onUpdate:modelValue' (value: any) {
            storeData.visible = value
          },
          onShow: showEvent
        }, {
          default: () => {
            const params = {
              $table: $xeTable,
              $grid: $xeGrid,
              $gantt: $xeGantt,
              options: defaultOptions,
              columns,
              params: defaultOptions.params as any
            }
            const hasEmptyData = defaultOptions.mode === 'empty'

            return h('div', {
              class: 'vxe-table-export--panel'
            }, [
              topSlot
                ? h('div', {
                  class: 'vxe-table-export--panel-top'
                }, $xeTable.callSlot(topSlot, params))
                : renderEmptyElement($xeTable),
              h('div', {
                class: 'vxe-table-export--panel-body'
              }, defaultSlot
                ? $xeTable.callSlot(defaultSlot, params)
                : [
                    h('table', {
                      class: 'vxe-table-export--panel-table',
                      cellspacing: 0,
                      cellpadding: 0,
                      border: 0
                    }, [
                      h('tbody', [
                        [
                          isPrint
                            ? renderEmptyElement($xeTable)
                            : h('tr', [
                              h('td', getI18n('vxe.export.expName')),
                              h('td', [
                                VxeUIInputComponent
                                  ? h(VxeUIInputComponent, {
                                    ref: xInputFilename,
                                    modelValue: defaultOptions.filename,
                                    type: 'text',
                                    clearable: true,
                                    placeholder: getI18n('vxe.export.expNamePlaceholder'),
                                    'onUpdate:modelValue' (value: any) {
                                      defaultOptions.filename = value
                                    }
                                  })
                                  : renderEmptyElement($xeTable)
                              ])
                            ]),
                          isPrint
                            ? renderEmptyElement($xeTable)
                            : h('tr', [
                              h('td', getI18n('vxe.export.expType')),
                              h('td', [
                                VxeUISelectComponent
                                  ? h(VxeUISelectComponent, {
                                    modelValue: defaultOptions.type,
                                    options: storeData.typeList,
                                    'onUpdate:modelValue' (value: any) {
                                      defaultOptions.type = value
                                    }
                                  })
                                  : renderEmptyElement($xeTable)
                              ])
                            ]),
                          isPrint || showSheet
                            ? h('tr', [
                              h('td', getI18n('vxe.export.expSheetName')),
                              h('td', [
                                VxeUIInputComponent
                                  ? h(VxeUIInputComponent, {
                                    ref: xInputSheetname,
                                    modelValue: defaultOptions.sheetName,
                                    type: 'text',
                                    clearable: true,
                                    placeholder: getI18n('vxe.export.expSheetNamePlaceholder'),
                                    'onUpdate:modelValue' (value: any) {
                                      defaultOptions.sheetName = value
                                    }
                                  })
                                  : renderEmptyElement($xeTable)
                              ])
                            ])
                            : renderEmptyElement($xeTable),
                          h('tr', [
                            h('td', getI18n('vxe.export.expMode')),
                            h('td', [
                              VxeUISelectComponent
                                ? h(VxeUISelectComponent, {
                                  modelValue: defaultOptions.mode,
                                  options: storeData.modeList.map((item: any) => {
                                    return {
                                      value: item.value,
                                      label: getI18n(item.label)
                                    }
                                  }),
                                  'onUpdate:modelValue' (value: any) {
                                    defaultOptions.mode = value
                                  }
                                })
                                : renderEmptyElement($xeTable)
                            ])
                          ]),
                          h('tr', [
                            h('td', [getI18n('vxe.export.expColumn')]),
                            h('td', [
                              h('div', {
                                class: 'vxe-table-export--panel-column'
                              }, [
                                h('ul', {
                                  class: 'vxe-table-export--panel-column-header'
                                }, [
                                  h('li', {
                                    class: ['vxe-table-export--panel-column-option', {
                                      'is--checked': isAllChecked,
                                      'is--indeterminate': isAllIndeterminate
                                    }],
                                    title: getI18n('vxe.table.allTitle'),
                                    onClick: allColumnEvent
                                  }, [
                                    h('span', {
                                      class: ['vxe-checkbox--icon', isAllIndeterminate ? getIcon().TABLE_CHECKBOX_INDETERMINATE : (isAllChecked ? getIcon().TABLE_CHECKBOX_CHECKED : getIcon().TABLE_CHECKBOX_UNCHECKED)]
                                    }),
                                    h('span', {
                                      class: 'vxe-checkbox--label'
                                    }, getI18n('vxe.export.expCurrentColumn'))
                                  ])
                                ]),
                                h('ul', {
                                  class: 'vxe-table-export--panel-column-body'
                                }, cols)
                              ])
                            ])
                          ]),
                          h('tr', [
                            h('td', getI18n('vxe.export.expOpts')),
                            parameterSlot
                              ? h('td', [
                                h('div', {
                                  class: 'vxe-table-export--panel-option-row'
                                }, $xeTable.callSlot(parameterSlot, params))
                              ])
                              : h('td', [
                                h('div', {
                                  class: 'vxe-table-export--panel-option-row'
                                }, [
                                  VxeUICheckboxComponent
                                    ? h(VxeUICheckboxComponent, {
                                      modelValue: hasEmptyData || isHeader,
                                      disabled: hasEmptyData,
                                      title: getI18n('vxe.export.expHeaderTitle'),
                                      content: getI18n('vxe.export.expOptHeader'),
                                      'onUpdate:modelValue' (value: any) {
                                        defaultOptions.isHeader = value
                                      }
                                    })
                                    : renderEmptyElement($xeTable),
                                  VxeUICheckboxComponent
                                    ? h(VxeUICheckboxComponent, {
                                      modelValue: isHeader ? defaultOptions.isTitle : false,
                                      disabled: !isHeader,
                                      title: getI18n('vxe.export.expTitleTitle'),
                                      content: getI18n('vxe.export.expOptTitle'),
                                      'onUpdate:modelValue' (value: any) {
                                        defaultOptions.isTitle = value
                                      }
                                    })
                                    : renderEmptyElement($xeTable),
                                  VxeUICheckboxComponent
                                    ? h(VxeUICheckboxComponent, {
                                      modelValue: isHeader && hasColgroup && supportMerge ? defaultOptions.isColgroup : false,
                                      title: getI18n('vxe.export.expColgroupTitle'),
                                      disabled: !isHeader || !hasColgroup || !supportMerge,
                                      content: getI18n('vxe.export.expOptColgroup'),
                                      'onUpdate:modelValue' (value: any) {
                                        defaultOptions.isColgroup = value
                                      }
                                    })
                                    : renderEmptyElement($xeTable)
                                ]),
                                h('div', {
                                  class: 'vxe-table-export--panel-option-row'
                                }, [
                                  VxeUICheckboxComponent
                                    ? h(VxeUICheckboxComponent, {
                                      modelValue: hasEmptyData ? false : defaultOptions.original,
                                      disabled: hasEmptyData,
                                      title: getI18n('vxe.export.expOriginalTitle'),
                                      content: getI18n('vxe.export.expOptOriginal'),
                                      'onUpdate:modelValue' (value: any) {
                                        defaultOptions.original = value
                                      }
                                    })
                                    : renderEmptyElement($xeTable),
                                  VxeUICheckboxComponent
                                    ? h(VxeUICheckboxComponent, {
                                      modelValue: hasMerge && supportMerge && checkedAll ? defaultOptions.isMerge : false,
                                      title: getI18n('vxe.export.expMergeTitle'),
                                      disabled: hasEmptyData || !hasMerge || !supportMerge || !checkedAll,
                                      content: getI18n('vxe.export.expOptMerge'),
                                      'onUpdate:modelValue' (value: any) {
                                        defaultOptions.isMerge = value
                                      }
                                    })
                                    : renderEmptyElement($xeTable),
                                  isPrint || !VxeUICheckboxComponent
                                    ? renderEmptyElement($xeTable)
                                    : h(VxeUICheckboxComponent, {
                                      modelValue: supportStyle ? defaultOptions.useStyle : false,
                                      disabled: !supportStyle,
                                      title: getI18n('vxe.export.expUseStyleTitle'),
                                      content: getI18n('vxe.export.expOptUseStyle'),
                                      'onUpdate:modelValue' (value: any) {
                                        defaultOptions.useStyle = value
                                      }
                                    }),
                                  VxeUICheckboxComponent
                                    ? h(VxeUICheckboxComponent, {
                                      modelValue: hasTree ? defaultOptions.isAllExpand : false,
                                      disabled: hasEmptyData || !hasTree,
                                      title: getI18n('vxe.export.expAllExpandTitle'),
                                      content: getI18n('vxe.export.expOptAllExpand'),
                                      'onUpdate:modelValue' (value: any) {
                                        defaultOptions.isAllExpand = value
                                      }
                                    })
                                    : renderEmptyElement($xeTable)
                                ]),
                                h('div', {
                                  class: 'vxe-table-export--panel-option-row'
                                }, [
                                  VxeUICheckboxComponent
                                    ? h(VxeUICheckboxComponent, {
                                      modelValue: defaultOptions.isFooter,
                                      disabled: !storeData.hasFooter,
                                      title: getI18n('vxe.export.expFooterTitle'),
                                      content: getI18n('vxe.export.expOptFooter'),
                                      'onUpdate:modelValue' (value: any) {
                                        defaultOptions.isFooter = value
                                      }
                                    })
                                    : renderEmptyElement($xeTable)
                                ])
                              ])
                          ])
                        ]
                      ])
                    ])
                  ]),
              bottomSlot
                ? h('div', {
                  class: 'vxe-table-export--panel-bottom'
                }, $xeTable.callSlot(bottomSlot, params))
                : renderEmptyElement($xeTable)
            ])
          },
          footer () {
            const params = {
              $table: $xeTable,
              $grid: $xeGrid,
              $gantt: $xeGantt,
              options: defaultOptions,
              columns,
              params: defaultOptions.params as any
            }
            return h('div', {
              class: 'vxe-table-export--panel-footer'
            }, footerSlot
              ? $xeTable.callSlot(footerSlot, params)
              : [
                  h('div', {
                    class: 'vxe-table-export--panel-btns'
                  }, [
                    VxeUIButtonComponent
                      ? h(VxeUIButtonComponent, {
                        content: getI18n('vxe.export.expCancel'),
                        onClick: cancelEvent
                      })
                      : renderEmptyElement($xeTable),
                    VxeUIButtonComponent
                      ? h(VxeUIButtonComponent, {
                        ref: xButtonConfirm,
                        status: 'primary',
                        content: getI18n(isPrint ? 'vxe.export.expPrint' : 'vxe.export.expConfirm'),
                        onClick: confirmEvent
                      })
                      : renderEmptyElement($xeTable)
                  ])
                ])
          }
        })
        : renderEmptyElement($xeTable)
    }

    nextTick(() => {
      if (!VxeUIModalComponent) {
        errLog('vxe.error.reqComp', ['vxe-modal'])
      }
      if (!VxeUIButtonComponent) {
        errLog('vxe.error.reqComp', ['vxe-button'])
      }
      if (!VxeUISelectComponent) {
        errLog('vxe.error.reqComp', ['vxe-select'])
      }
      if (!VxeUIInputComponent) {
        errLog('vxe.error.reqComp', ['vxe-input'])
      }
      if (!VxeUICheckboxComponent) {
        errLog('vxe.error.reqComp', ['vxe-checkbox'])
      }
    })

    return renderVN
  }
})
